<template>
  <div>
    <!-- 面包屑导航 -->
    <el-breadcrumb separator="->">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>商品管理</el-breadcrumb-item>
      <el-breadcrumb-item>添加商品</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片区域 -->
    <el-card>
      <el-alert
        title="添加商品页面"
        type="info"
        center
        show-icon
        :closable="false"
      >
      </el-alert>
      <el-steps :active="activeindex - 0" finish-status="success" align-center>
        <el-step title="基本信息"></el-step>
        <el-step title="商品参数"></el-step>
        <el-step title="商品属性"></el-step>
        <el-step title="商品图片"></el-step>
        <el-step title="商品内容"></el-step>
        <el-step title="完成"></el-step>
      </el-steps>
      <el-form
        :model="addGoodsForm"
        :rules="addGoodsFormRules"
        ref="addGoodsFormRef"
        label-position="top"
      >
        <el-tabs
          :tab-position="'left'"
          v-model="activeindex"
          :before-leave="tabLeave"
          @tab-click="tabClick"
        >
          <el-tab-pane label="基本信息" name="0">
            <el-form-item label="商品名称" prop="goods_name">
              <el-input v-model="addGoodsForm.goods_name"></el-input>
            </el-form-item>
            <el-form-item label="商品价格" prop="goods_price">
              <el-input
                v-model="addGoodsForm.goods_price"
                type="number"
              ></el-input>
            </el-form-item>
            <el-form-item label="商品数量" prop="goods_number">
              <el-input
                v-model="addGoodsForm.goods_number"
                type="number"
              ></el-input>
            </el-form-item>
            <el-form-item label="商品重量" prop="goods_weight">
              <el-input
                v-model="addGoodsForm.goods_weight"
                type="number"
              ></el-input>
            </el-form-item>
            <el-form-item prop="goods_cat" label="商品分类">
              <el-cascader
                v-model="addGoodsForm.goods_cat"
                :options="cateList"
                :props="cateProps"
                @change="handleChange"
              ></el-cascader>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品参数" name="1">
            <el-form-item
              :label="item.attr_name"
              v-for="item in manyData"
              :key="item.attr_id"
            >
              <el-checkbox-group v-model="item.attr_vals">
                <el-checkbox
                  :label="cb"
                  v-for="(cb, i) in item.attr_vals"
                  :key="i"
                ></el-checkbox>
              </el-checkbox-group>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品属性" name="2">
            <el-form-item
              :label="item.attr_name"
              v-for="item in onlyData"
              :key="item.attr_id"
            >
              <el-input v-model="item.attr_vals"></el-input>
            </el-form-item>
          </el-tab-pane>
          <el-tab-pane label="商品图片" name="3">
            <el-upload
              :action="actionUrl"
              :on-preview="handlePreview"
              :on-remove="handleRemove"
              list-type="picture"
              :headers="headerObj"
              :on-success="handleSuccess"
            >
              <el-button size="small" type="primary">点击上传</el-button>
            </el-upload>
          </el-tab-pane>
          <el-tab-pane label="商品内容" name="4">
            <!-- 富文本 -->
            <quill-editor v-model="addGoodsForm.goods_introduce" />
            <el-button type="primary" class="addbtns" @click="add"
              >添加商品</el-button
            >
          </el-tab-pane>
        </el-tabs>
      </el-form>
    </el-card>
    <!-- 图片预览弹出框 -->
    <el-dialog title="图片预览" :visible.sync="picdialogVisible" width="50%">
      <img :src="picSrc" alt="" class="imgStyle" />
    </el-dialog>
  </div>
</template>
<script>
import _ from 'lodash'
export default {
  data() {
    return {
      // 步骤条索引
      activeindex: '0',
      //   添加商品对象
      addGoodsForm: {
        goods_name: '',
        goods_price: 0,
        goods_number: 0,
        goods_weight: 0,
        goods_cat: [],
        pics: [],
        goods_introduce: '',
        attrs: []
      },
      addGoodsFormRules: {
        goods_name: [
          { required: true, message: '请输入商品名称', trigger: 'blur' }
        ],
        goods_price: [
          { required: true, message: '请输入商品价格', trigger: 'blur' }
        ],
        goods_number: [
          { required: true, message: '请输入商品数量', trigger: 'blur' }
        ],
        goods_weight: [
          { required: true, message: '请输入商品重量', trigger: 'blur' }
        ],
        goods_cat: [
          { required: true, message: '请选择商品分类', trigger: 'blur' }
        ]
      },
      //   商品分类列表
      cateList: [],
      cateProps: {
        expandTrigger: 'hover',
        label: 'cat_name',
        value: 'cat_id',
        children: 'children'
      },
      //   商品参数数据
      manyData: [],
      onlyData: [],
      // 图片上传地址
      actionUrl: 'https://lianghj.top:8888/api/private/v1/upload',
      headerObj: {
        Authorization: window.sessionStorage.getItem('token')
      },
      picdialogVisible: false,
      picSrc: ''
    }
  },
  created() {
    this.getCateList()
  },
  methods: {
    async getCateList() {
      const { data: res } = await this.$http.get('categories')
      if (res.meta.status !== 200) {
        return this.$message.error(res.meta.msg)
      }
      this.cateList = res.data
      console.log(this.cateList)
    },
    handleChange() {
      console.log(this.addGoodsForm.goods_cat)
      if (this.addGoodsForm.goods_cat.length !== 3) {
        this.addGoodsForm.goods_cat = []
        return false
      }
    },
    // tab切换之前的钩子
    tabLeave(activeName, oldActiveName) {
      if (oldActiveName === '0' && this.addGoodsForm.goods_cat.length !== 3) {
        this.$message.info('请选择三级商品分类')
        return false
      }
    },
    async tabClick() {
      console.log(this.activeindex)
      if (this.activeindex === '1') {
        //   id书写太长，可以通过计算属性缩减
        const { data: res } = await this.$http.get(
          `categories/${this.cateId}/attributes
`,
          { params: { sel: 'many' } }
        )
        if (res.meta.status === 200) {
          res.data.forEach((e) => {
            e.attr_vals = e.attr_vals ? e.attr_vals.split(',') : []
          })
          this.manyData = res.data
          console.log('this.manyData', this.manyData)
        }
      } else if (this.activeindex === '2') {
        const { data: res } = await this.$http.get(
          `categories/${this.cateId}/attributes
`,
          { params: { sel: 'only' } }
        )
        if (res.meta.status === 200) {
          this.onlyData = res.data
          console.log(this.onlyData)
        }
      }
    },
    // 图片预览效果
    handlePreview(file) {
      this.picdialogVisible = true
      this.picSrc = file.response.data.url
      console.log(file)
    },
    // 图片移除
    handleRemove(file) {
      console.log(file)
      const filePath = file.response.data.tmp_path
      const i = this.addGoodsForm.pics.findIndex((x) => x.pic === filePath)
      this.addGoodsForm.pics.splice(i, 1)
    },
    handleSuccess(response) {
      console.log(response)
      const picsPath = { pic: response.data.tmp_path }
      this.addGoodsForm.pics.push(picsPath)
      console.log(this.addGoodsForm)
    },
    add() {
      console.log(this.addGoodsForm)
      this.$refs.addGoodsFormRef.validate(async (valid) => {
        if (!valid) return false
        this.manyData.forEach((e) => {
          this.addGoodsForm.attrs.push({
            attr_id: e.attr_id,
            attr_value: e.attr_vals.join(',')
          })
        })
        this.onlyData.forEach((e) => {
          this.addGoodsForm.attrs.push({
            attr_id: e.attr_id,
            attr_value: e.attr_vals
          })
        })
        const newAddFrom = _.cloneDeep(this.addGoodsForm)
        newAddFrom.goods_cat = newAddFrom.goods_cat.join(',')
        console.log('newAddFrom', newAddFrom)
        const { data: res } = await this.$http.post('goods', newAddFrom)
        console.log('res', res)
        if (res.meta.status !== 201) {
          return this.$message.error(res.meta.msg)
        }
        this.$message.success(res.meta.msg)
        this.$router.push('/goods')
      })
    }
  },
  computed: {
    cateId() {
      if (this.addGoodsForm.goods_cat.length === 3) {
        return this.addGoodsForm.goods_cat[2]
      }
      return null
    }
  }
}
</script>
<style lang="less" scoped>
.el-steps {
  margin: 15px 0;
}
.imgStyle {
  width: 100%;
}
.addbtns {
  margin-top: 15px;
}
</style>
